Biofuel drive might raise CO 2
Converting non-agricultural land to grow biofuel crops causes large emissions of carbon dioxide that worsen global warming, according to a new Science study ft.com
Spacecraft Photographs Mars Avalanche
A robotic spacecraft circling Mars has snapped the first image of a series of active avalanches on the planet. nytimes.com
Online News Ad Sales Bid Gains Momentum
A group of newspaper publishers including New York Times, Hearst and Gannett will join an industry-backed online advertising sales effort aimed at winning more business from national advertisers. feeds.cbsnews.com